Further to Lebro post of his cylinder pressures I pose this question.
Bob.
What CR did you aim at with your engine?
my old collected notes shew this relationship between cr and psi
140 psi~8:1
150 psi~8.5:1
160 psi~9:1
170 psi~9.5:1
180 psi~10:1
190 psi~10.5:1
Please feel free to rubbish this info.
Does cam timing and tappet clearance affect the cylinder pressure?
My own engine measures 180-185 psi wot. cranking speed.
The build measurements and